Sling and end fitting therefor



A g- 26, 1947. F. w. VON WEHRDEN 2,426,538

SLING AND END FITTING THEREFOR Filed Sept 28, 1944 ///6 HTTORA/E-KS'.

Patented Aug. 26,1947

4 UNITED 1 STAT SLING AND END FITTING THEREFOR Frederick .W. vonWehrden, St. Louis County, Mo.,

assignor to Broderick & Bascom Rope Company, St. Louis, Mo., acorporation of Missouri Application September 28, 1944, Serial No.556,277

This invention relates to the end'fitting constructions of slings,particularly braided or plaited-wire rope slings. object to provide ashackle or clevis-type end fitting construction for the above type ofsling that is strong and durable, light in weight, simple and economicaland is readily assembled from rope thimbles of standard size and shape.The invention consists in interconnecting two rope thimbles in spacedrelation to form a shackle or clevis-type end fitting and in providingthe braided or plaited wire rope sling with end loops that fit aroundthe respective thimbles. It also consists in the parts and combinationsand arrangements of parts hereinafter described and claimed.

In the accompanying drawing, which forms part of this specification andwherein like symbols refer to like parts wherever they occur,

Fig. 1 is a side elevational view of a plaited or braided wire ropesling provided with an end fitting construction embodying my invention,the view being taken from one side face of the fittin Fig. 2 is a sideelevational view of the sling and end fitting construction, the viewbeing taken from one side edge of the fitting,

Fig. 3 is an end elevational View of the sling and end fitting,

Fig. 4 is a cross-sectional view on the line 4-4 in Fig. 2; and

Fig. 5 is a cross-sectional View on the line 55 in Fig. 1.

In the accompanying drawing, my invention is shown embodied in a wirerope sling comprisin eight braided or plaited strands I terminating atthe end of the sling in four loops 2. The

. sling is provided with a shackle or clevis-type end fitting comprisingtwo forged, cast or pressed metal eyes or thimbles 3 of well known formthat are permanently connected together in spaced parallel relation attheir inner ends by a metal cross or bridge piece 4 that fits betweenand is welded, as at id, to the opposing side faces of said thimbles.

Each of the thimbles 3 has an external groove or channel 5 therein; andthe four end loops 2 of the sling are separated or divided into twopairs with the two loops of each pair seating one upon the other in theexternal groove of each thimble. As shown in the drawing, the channelsof each thimble are bridged or covered, as at 6, at the outer and innerends thereof so as to retain the end loops 2 of the sling in saidgrooves.

Near the end fitting, the braided strands l are bound together with awire serving 1, which is divided and wrapped, as at la, around each pairClaims. (01. 287-81) It has for its principal of end loops 2. Theserving is anchored-in place preferably by means of welds 9. Thehereinbefore described sling and end fitting construction have severalimportant advantages, The two end thimbles are rigidly'connectedtogether in proper spaced relation by the combined spacer and strutmember welded therebetween, thereby forming a shackle or clevis-type endfitting of strong, simple and economical construction. The size of thebuilt-up end fitting I construction may be varied by usin thimbles ofdifferent sizes; and the spacing of the thimbles may be varied by usingconnecting plates of differentlengths. The end loops of the slingcooperate with the thimbles ofthe end fitting to divide the loadtherebetween; and the loops are in tension and thus tend to hold thethimbles under compression against strains which tend to spread ordistort them. The end loops of the sling are equally divided between thetwo thimbles of the shackle or clevis-type end fittin and the servingwire operates to hold the divided pairs of loops in proper spacedrelation before entering the end fitting and to prevent wear or scuifingof these portions of the sling. The hereinbefore described constructioneliminates the heavy and expensive; forged or cast one-piece clevis-typeend fittings; heretofore employed; and it also eliminates the-@zinc-filled socket constructions heretofore re-. quired for anchoringthe sling to such end fittings.

What I claim is:

1. In combination, a rope, and an end fitting: therefor, said endfitting comprising a plurality of thimbles rigidlyconnected together inspaced. relation, said rope terminatin at one end in a plurality ofloops, each positioned about one of said thimbles.

2. In combination, a wire rope and an end fitting therefor, said endfitting comprising a pair of thimbles rigidly connected together inspaced relation, said wire rope terminating at one end in two loops,each positioned about one of said thimbles.

3. In combination, a braided wire rope sling and a shackle-type endfitting therefor, said end fitting comprising two thimbles rigidlyconnected together in spaced relation, said braided wire ropeterminating at one end in two loops, one positioned about each of saidthimbles.

4. In combination, a braided wire rope sling and a shackle-type endfitting therefor, said end fitting comprising two thimbles and a bridgepiece rigidly connecting said thimbles together in spaced relation, saidbraided wire rope terminating at one end in two pairs of loops, theloops of one pair being positioned about one of said thimbles and theloops of the other pair being positioned about the other of saidthimbles.

5. In combination, a braided wire rope sling and a shackle-type endfitting therefor, said end fitting comprising two exteriorly groovedthimbles and a bridge piece welded to said thimbles and rigidlyconnecting them together in spaced relation, said'braided wire ropeterminating at one end in two pairs of loops, the loops of one pairbeing positioned one over the other in the eX- ternal groove of one ofsaid thimbles and the loops of the other pair being similarlypositionedin the external groove of the otherofsaidthimbles.

6. In combination, a braided wire rope; sling and a shackle-type endfitting therefor, said end fitting comprising two thimbles and a bridge.piece.

rigidly connecting said thimbles together in spaced relation, saidbraided wire rope terminating at one end in two pairs of loops, theloops of one pair being positioned about one of said thimbles and theloops of the other pair being positionedabout the other of saidthimbles, and a wireserving for binding pair of loops together adjacentto said end fitting.

7.' An end fitting for a rope sling comprising" a pairaof separatelyformed, similarly positioned rope. thimbles. rigidly connected togetherwithportions,thereof disposed in spaced apart parallel relation.

8. Ashackle-type end fitting for a rope sling comprising two separatelyformed, similarly DOSiv tioned rope thimbles having non-communicatingexternal peripheral rope grooves therein and aseparatecross-memberrigidly connecting said thimbles together in spacedapart relation.

thimbles together with portions thereof disposed in spaced apartrelation, each of said thimbles having, an. external peripheral groovetherein disposed in non-communicating relation to the V groove'in' theother thimble and adapted to receive, an end loop of said sling.

FREDERICK W. VON WEI-IRDEN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,498,004 Warren June 17, 19241,859,143 Howe May 17, 1932v 2,322,869 Mohr June 29, 19.43

646,091 Hammond Mar. 27, 1900 1,686,288 Meals Oct. 2, 1928 42,817Carroll May 17,1864 2,354,280 Russell July 25, 1944 1,802,657 KellemsApr. 28, 1931 126,918 Badcock May 21, 1872 FOREIGN PATENTS NumberCountry Date 527,582 Germany June 19, 1931 Certificate, of CorrectionPatent No. 2,426,538. August 26, 1947. FREDERICK W. VON WEHRDEN It ishereby certified that error appears in the printed specification of theabove numbered patent requiring correction as follows: Column 3, line24,after binding insert each; and that the said Letters Patent should beread With this correction therein that the same may conform to therecord of the case in the Patent Ofl'ice.

Signed and sealed this 30th day of December, A. D. 1947.

THOMAS F. MURPHY,

Assistant Commissioner 0 f Patents.

